Relay.



H. A. PARRISH.

RELAY.

APPLICATION FILED DEC. 17. 1913.

Patented Dec. 15, 1914.

5 n ucm tot 4m/Mw dnne UfNlTllll) STATES PTENT GFFICE;

HOMER A. PARE/ISH, OF KALAIl/IAZOO, MICI-IIGAN, ASSGNOR OF ONE-'HEUTE TQ G. EDWIN DUNBAR, OE KALAIEAZOO, MICHIGAN.

RELAY.

Application filed December 17, 1913.

To all 'whom t may concern Be it known that I, HOMER A. Palmieri, a citizen of the United States, residing at Kalamazoo, in the county of Kalamazoo and State of Michigan, have invented certain new and useful improvements in Relays, of which the following is a specification.

This invention relates to improvements in relays.

lThe object of this invention is to provide an improved relay which is quickly and positively operated by a normally closed circuit.

Further objects, and objects relating to details and economies of construction and operation will readily appear from the detailed description to follow.

Tl accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly deiined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated 'in the accompanying drawing forming a part of this specification, in which:

Figure l is a front elevation of my improved relay, the front of the casing being removed. Fig. H is a longitudinal sectional view on the line t-Ll or F ig. l.

ln the drawings similar reference characters refer to similar parts throughout the several views and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Considering the numbered parts of the drawing 25 is the casing of tie automatic relay, and to the side wall of said casing the solenoids 26 are secured as at 27. rThe wire 23 is connected to the solenoids 26 and enters the casing through the binding post 24.

From the other end of the solenoid 26 wire 23 leads to a binding post 29.

3l is the armature of the solenoid 26, and is pivoted on the pin 32 secured in the L- shaped bracket 33 which is fastened to the side wall of the casing, as at 34. rlhis armature is held resiliently out of contact with the solenoid by means of the spring 35 secured at one end of the armature and at the other end to a bracket 36 which is attached to the side wall of the casing as at 37.

38 is a pin which serves as a stop to limit the forward movement of the armature.

Specification of Letters llatent.

Patented Dec. 15, 1914.

Serial No. 807,323.

Bracket 42 is secured to the side wall of the casing at 43 and carries pin 4J, on which the bell crank pawl 39 is pivoted. One arm of said pawl extends downwardly so as to be engaged by 'the armature 3l when it is drawn forward. The opposite end of this pawl is provided with a notch L9 in the end thereof and a beveled edge Ll0 so that it may easily be lifted by the contact plate t3 is a spring secured to the pawl 39 and engaging the bracket il2 so as to hold the pawl normally in engaging position.

Bracket 46 is secured to the side wall of the casing at 4-7 and has an upwardly eX- tending portion on which the notch i9 in the end of the pawl 39 rests. rlhe contact plate all is pivoted to this bracket on 'the pin 45 secured thereto. A small pad of hard rubber i3 is secured to the bracket and serves as a buffer to lessen the jar and noise when the contact plate is forced against the bracket. Contact pin 50 is secured in a post 51 which is mounted on the side wall of the asing. This pin is adjustable by means of the thumb nut 52. "W ire 53 is connected to the contact plate 44 through binding post 55. The contact pin 50 is electrically connected with wire 57 -through binding post 5S. It will readily be seen that when the armature 3l is pulled forward the pawl 39 will be lifted so as to allow the contact plate d to drop into contact with pin 50 and close the circuit between wires 57 and 53.

To the side wall of the casing, solenoids are secured at 66. These solenoids are provided with an armature 67 which is pivoted at 68 to a bracket 69 secured to the bottom of the casing at 7 0. This armature carries the upwardly extending rod 71 which is provided at its upper end with the ball 72 of insulating material which is adapted to engage the contact plate eel and move it into a position to be engaged by the notch 4:9 on the end of the pawl 39, whenever the pawl 67 is attracted by the magnet 65. A bracket 75 is secured to the casing by means of the screws 7 6 and a spring 73 is adjustably secured to this bracket as at 74e and to armature 67 so that the spring holds the armature normally out of engagement with the solenoids.

I am aware that the structure which have here shown is susceptible of considerable variation without departing from my invention, and I therefore do not wish to be restricted to it. However, the particular embodiment I have here shown is very advantageous and is to be preferred and I desire to claim it specifically, as well as broadly, as indicated by the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. In a device of the class described, the combination of a casing, a post secured to the side wall of said casing, a contact pin adjustably mounted in said post, a Contact plate pivotally mounted in said casing so as to move into engagement with said Contact pin, an L-shaped pawl pivotally mounted in said casing, a notch in the upper arm of said pawl adapted to engage the top of said contact plate, a normally energized electro-mag net, a pivoted armature for said magnet engaging the lower arm of said pawl, a spring secured to said armature and tending to draw the same away from said magnet, a second electro-magnet, a pivoted armature for said magnet, a spring tending to draw said armature away from the magnet, a push rod carried on the end of said armature, a ball of insulating material secured on the end of said push rod in position to engage the contact plate, all coacting substantially as described for the purpose specified.

2. In a device of the class described, the combination of a casing, a post secured to the side wall of said casing, a contact pin adjustably mounted in said post, a contact plate pivotally mounted in said casing so as to move into engagement with said Contact pin, an L-shaped pawl pivotally mounted in said casing, a notch in the upper arm of said pawl adapted to engage the top of said contact plate, a normally energized electromagnet, a pivoted armature for said magnet engaging the lower arm of said pawl, a second electro-magnet, a pivoted armature for said magnet, a push rod carried on the end of said armature, and a ball of insulating material secured to the end of said push rod in position to engage the contact plate, all coacting substantially as described for the purpose specified.

3. In a device of the class described, the combination of a casing, a post secured to the side wall of said casing, a contact `pin adjustably mounted in said post, a contact plate pivotally mounted in said casing so as to move into engagement with said contact pin, an L-shaped pawl pivotally mounted in said casing, a notch in the upper arm of said pawl adapted to engage the top of said contact plate, a normally energized electromag net, means controlled by said magnet for tripping said pawl, a second electro-magnet, a pivoted armature for said magnet, a push rod carried on the end of said armature, and a ball of insulating material secured on the end of said push rod in position to engage the contact plate, all coacting substantially as described for the purpose specified.

4. In a device of the class described, the combination of a casing, a contact member, a second Contact member mounted so as to move into engagement with the first contact member, a pawl mounted so as to engage said contact member and hold it out of engagement with the first contact member, a normally energized electro-magnet, a pivoted armature for said magnet engaging said pawl and adapted when the magnet is denergized to lift said pawl out of engagement with the contact member, a second electro-magnet, and means controlled by the energizing of said magnet for moving said second contact member out of engagement with the first contact member, all eoacting substantially as described for the purpose specified.

5. In a device of the class described, the combination of a casing, a fixed Contact member, a movable contact member adapted to move into engagement with said fixed contact member, a pawl engaging said movable member and holding it out of engagement with said fixed member, a normally energized electro-magnet, and means controlled by the denergizing of said magnet for moving said pawl out of engagement with said movable contact member, a second electro-magnet, means controlled by the energizing of said magnet for moving said movable contact member out of engagement with the fixed member, all coacting substantially as described for the purpose specified.

In Witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

HOla/IER A. PARRISH. [n s] `Witnesses:

LUELLA Gr. GREENFIELD, MARGARET L. GLASGOW.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, ID. C. 

